LOS ANGELES (AP) - The U.S. energy secretary says a major California gas leak is a sign of aging energy infrastructure and the incident calls for stronger gas storage regulations.

LOS ANGELES (AP) The U.S. energy secretary says a major California gas leak is a sign of aging energy infrastructure and the incident calls for stronger gas storage regulations.

Secretary Ernest Moniz on Tuesday visited the site of the Southern California Gas Co. well blowout to learn lessons to help frame a multiagency approach to improving safety.

The gas leak spewed climate-changing methane uncontrollably for 16 weeks before the leak was temporarily plugged last week.

Nearly 6,500 families in the Porter Ranch community were uprooted and many complained of symptoms ranging from nosebleeds to nausea.

Moniz says the leak at a 60-year-old well falls under a larger theme of energy infrastructure that needs to be brought into the 21st century.

He also says regulation of the gas storage fields needs a fresh look.